1. Introduction
Surface plating technologyAn important component of surface engineering, including traditional electroplating and the rapid development of electric brush technology, chemical plating technology, composite plating technology, etc. in recent decades. With the development of science and technology, especially
nanomaterialsWith the development of nanotechnology, the content of these plating techniques will be further expanded, and the performance of the plating layer will also be greatly improved.
Surface engineering is an interdisciplinary, composite, and comprehensive field that enhances the surface properties of matrix materials for mechanical parts and electronic and electrical components. Surface engineering is an important component of modern manufacturing technology and a fundamental means of maintenance and remanufacturing. Surface engineering plays an important role in energy conservation, material saving, high quality, efficiency, environmental protection, and sustainable development. Experts predict that surface engineering will become one of the key technologies for industrial development in the 21st century.
Modern surface coating technology utilizes electrochemical or chemical methods to deposit one or more coatings on the surface of solid materials, thereby endowing the surface of engineering equipment or mechanical parts with various characteristics, such as wear resistance, friction reduction, corrosion resistance, high temperature oxidation resistance, or other functional properties.
2. The Status and Role of Modern Surface Coating Technology
2.1 Status of Modern Surface Coating Technology
(1) One of the key technologies in the manufacturing of modern surface coating technology products is the basic process technology to ensure product quality.
(2) Modern surface coating technology is an effective means of improving economic benefits through high-quality, efficient, energy-saving, material saving, and environmentally friendly methods.
(3) Modern surface coating technology provides special functional materials for the development of high-tech.
2.2 The role of modern surface coating technology
Surface coating technology involves applying various coatings to the working surface, which serve the following purposes:
(1) Improve the corrosion resistance and high-temperature oxidation resistance of materials or parts, and enhance their ability to resist corrosion in the surrounding working environment;
(2) Improve heat resistance, thermal conductivity, insulation, heat absorption, and heat reflection performance;
(3) Granting specific physical properties to materials, such as conductivity, insulation, semiconductor properties, superconductivity, radar wave invisibility, infrared invisibility, oleophilicity, hydrophilicity, etc;
(4) Empower materials with sound, light, magnetic, electrical conversion and storage memory functions;
(5) Endowing materials with specific chemical properties, such as acid resistance, alkali resistance, resistance to special liquids, and catalysis;
(6) Improve the surface integrity of material components, reduce surface roughness, and enhance resistance to fatigue and corrosion fatigue.
3. Types of modern surface coating technologies
Modern surface plating techniques mainly include groove plating, electric brush plating, friction electronic spray plating, non-metallic brush plating, chemical plating, pulse plating, composite plating, nano micron composite plating combination plating, etc.
3.1 Electroplating Technology
Electroplating technology is a technique that uses electrochemical methods to deposit metals or metalize the surface of a substrate.
3.2 Electric brush technology
Electric brush plating is a special method, also known as brush plating, coating, selective plating, etc. It relies on an anode contact pad or brush to provide electrolyte for electroplating, and during electroplating, the pad or brush is moved on the plated cathode in a plating method.
3.3 Chemical plating technology
Chemical plating, also known as "electroless plating", refers to the process of using a reducing agent to chemically reduce metal ions in an electrolyte solution to form an active catalytic material surface without the passage of external current, depositing a coating layer that is firmly bonded to the substrate. The material can be metallic or non-metallic. The plating layer is mainly composed of metal alloys, with nickel copper being the most commonly used.
3.4 Composite plating technology
The special coating formed on the surface of a material by adding one or more insoluble solid particles to a metal substrate through electrochemical or chemical deposition solution and depositing them together with the substrate metal is called composite coating. This process of obtaining composite coating is called composite coating. Composite coating is a metal coating with uniformly distributed solid particles, hence it is also known as dispersion coating or dispersed coating.
en 
